Both formats are everywhere, and both have a place. The question is not which one is better in general, but which one fits what the recipient has to do with the document. If they only need to read it, print it, or keep it, a PDF is almost always the right answer. If they need to change it, an editable file is the honest choice.
What a PDF gives you
- A fixed layout: fonts, spacing, and page breaks look the same on a phone, a laptop, or a printer.
- Protection against accidental edits: the text cannot be modified by someone who simply opens the file.
- Universal access: nobody needs particular software to read it.
- A stable record: what you sent is exactly what they received.
What an editable file gives you
A Word document can be rewritten, commented on, and reformatted. That is invaluable while a text is still being drafted or negotiated, for example when a client wants to propose changes to a proposal. The price is that the layout depends on the software and fonts of whoever opens it, so the file can look different on another machine.
A simple decision rule
- Is the document final? Send a PDF.
- Does the other person need to edit it? Send the editable file, and keep a PDF of your own version for reference.
- Is it a form or a document to be signed? Send a PDF and let the recipient sign it.
- Not sure? Send the PDF and mention that an editable version is available on request.
Format by situation
Resumes and cover letters
Send PDFs. A resume that arrives in Word can have its fonts replaced and its columns shifted, which is the last thing you want a recruiter to see. If your resume is written in Word, convert it first with Word to PDF, or build it directly with the Resume Builder, which exports a PDF.
Contracts and quotes
Share the editable version while terms are being discussed, then freeze the agreed text as a PDF for signature. The Sign PDF tool can add a drawn or typed signature to the final version. If both sides exchange revised versions, the Compare PDF tool shows exactly what changed between them.
Invoices
Invoices are almost always sent as PDFs, because the amounts must not change after you issue them. The Invoice Generator produces one directly.
Spreadsheets and reports
A PDF is a good way to share a snapshot of data that nobody should alter. If the recipient needs to work with the numbers, send the spreadsheet itself. You can turn a sheet into a PDF with Excel to PDF.
Avoid the common layout problems
- Embed or choose standard fonts when you write the original, so the converted file looks as intended.
- Check the preview of every page after converting, not just the first.
- Use real headings and lists rather than manual spacing, which tends to break when converted.
- Keep the original editable file in a safe place, so you can fix and re-export it later.
Is a PDF really uneditable?
Not completely. A PDF is harder to change than a Word document, but tools exist to correct text inside one, including the Edit PDF tool on this site, which is useful for fixing a typo or adding a date. That also means a PDF is not proof against determined tampering. For documents where authenticity matters, rely on a proper signature process rather than on the format alone.
File size and sharing
A PDF built from scanned pages or large images can be heavy. If an email provider or an upload form rejects it, shrink it with Compress PDF. Our guide on meeting file size limits on online forms walks through the full process.
Frequently asked questions
Should I send my resume as a PDF or a Word file?+
A PDF is the safer choice, because the layout stays identical on every device. Send a Word file only if the employer explicitly asks for one.
Can a PDF be edited?+
It is harder to edit than a Word file, but it can be done with the right tool. For documents where authenticity matters, use a proper signature process.
How do I turn my Word document into a PDF?+
Use a converter such as the Word to PDF tool, check the preview of every page, and download the result.
Which format is better for contracts?+
Use an editable file during negotiation, then freeze the agreed version as a PDF for signature.